Never heard of Devil’s Slide?
Until last year, it was a 1.3 mile stretch of California Highway 1 between the beach communities of Pacifica and Montara south of San Francisco. We remember, not fondly, white-knuckle driving, eyes focused only on the road as we headed down this winding narrow road to visit friends.
This coastal stretch of road has been slowly falling into the Pacific Ocean since it was built in 1927. Often closed due to rocks and landslides, drivers navigated inland, adding up to an hour of driving time. Finally there is an alternate inland route. The Tom Lantos Tunnels, opened to Highway 1 traffic in 2013, cutting off the unstable, shoreline section.
A guide explains about the active tectonic plates and view from the new park.